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प्रश्न
Water cycle is an example of interconversion of states of water. Explain.
उत्तर
Water from oceans, rivers lakes from leaves of trees (transperation) changes into vapours when the temperature increases or evaporates and enters the atmosphere as clouds when the temperature falls the vapours change into the water and some of it in the form of snowfall on mountains and earth in the form of water and hales and this continues. Thus water cycle is an example of interconversion of states of water.
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संबंधित प्रश्न
The melting point of ice is 0°C.
.............. process is just reverse of melting.
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In a solid, the molecules ............................................ but they remain at their fixed positions.
Name the three states of matter.
State the general properties of a solid.
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The physical state of a substance, which has a fixed volume but no fixed shape is ...............
Fill in the blank
Liquids have no definite ...........
Multiple choice question.
A solid is a state of matter that has
Complete the statement given below by selecting the correct word.
____ is an example of a crystalline substance.
State the correct term from A, B, C, D, E, or F in List II which represents the change of state of matter or its relevant property from List I.
| List I | List II |
| 1. Solid 'X' to a Liquid 'X' | A: Condensation |
| 2. Liquid 'Y' to its vapour 'Z' | B: Vaporization |
| 3. 'Z' to 'Y' | C: Melting |
| 4. 'Y' to 'X' | D: Freezing |
| 5. The temperature at which 'Y' changes to 'Z' | E: Melting point |
| F: Boiling point |
